Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cwmwd
←
Breton
kombod
(cognate)
←
Welsh
cyf
(prefix)
←
Welsh
bod
(prefix)
←
Old Breton
compot
(cognate)
←
Middle Welsh
kymhwt
(inherited)
→
English
commote
(borrowed)
→
Welsh
cymydog
(suffix)